that was going to be my question too ... You won't see tempm changes from the stock sensor because it's before the IC. Joos test would be accurate though.

My .02, the sprayer is FAR from useless.

A friend of mine did some tests with a home made IC sprayer on a 1.8t VW. The test was done using a mix of alcohol and water in the sprayer tank ... I don't knwo the ratio used. But, he logged an air temp difference of ~20*C with the mst on the IC.

Now, this was a SMIC which is inherently less efficient than an FMIC and alcohol was used. In comparison, I wouldn't doubt a 10*C temp drop on a stock Evo FMIC with a water/alcohol mix misted on the IC.

If you plan to try this using the windshield sprayer on an '05+, be aware that you will likely have flow issues since the spray nozzle will be lower than the reservoir. Gravity will make them leak. I had this issue on my VW and it made me ditch the project.

 

so why not have one area of the hosing that goes higher than the sprayer motor prior to it going lower? that way the motor has to push the water upwards through the "hump" and then down to the sprayers... its an idea..

 

One other note on the subject. Racetracks dont like you spraying water when your racing so dont figure on using it at the track.

 

this works when the line is not filled with water. But, when it's full all that matters is the elevation of the line's exit. think of siphoning fuel from a gas tank ... the hose goes up from the tank out of the filler hose and down to the can, but it flows once you get it going.

 

Yes, sprayers are only really useful on the highway when you are trying to pass someone going slower than the speed limit ... which is perfectly legal.

 

Mixing alcohol and water is a cool idea, i'm gonna try it.

 

as long as the track doesnt know about it i wouldnt think it matters. Although you wouldnt really need it until the end of the 1/4 anyway. Like it was mentioned above the hwy is where it really shines.

 

Work or Not, the one's that use em' - get a clean FMIC ...Hee-Haw!

 

guys gimme a break....whats more of a waste of posts is people complaining about wasting posts...and using "search". For every hastily posted question theres ALWAYS like 50 posts about using the search button so whats really more of a waste, and yes MY post would be a waste too then so there ya go